When using these functions, you may omit calls to
pfpro_init() and pfpro_cleanup()
as this extension will do so automatically if required. However the
functions are still available in case you are processing a number of
transactions and require fine control over the library.
You may perform any number
of transactions using pfpro_process() between the two.

These functions were added in PHP 4.0.2.

Note:
These functions only provide a link to Verisign Payment Services. Be sure
to read the Payflow Pro Developers Guide for full details of the required
parameters.

需求

Once you have downloaded the SDK you should copy the files from
the lib directory of the
distribution. Copy the header file pfpro.h
to /usr/local/include
and the library file libpfpro.so to
/usr/local/lib.

Alternatively, you can extract the tarball from Verisign in one
location, and reference it during build configuration with the --with-pfpro[=DIR] option: